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  Digital distribution management system and contents distribution management method using the sameThe Patent Description & Claims data below is from USPTO Patent Application 20080097921. Brief Patent Description - Full Patent Description - Patent Application Claims
CLAIM OF PRIORITY [0001]This application claims the benefit of Korean Patent Application No. 2006-0103159 filed on Oct. 23, 2006 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002]1. Field of the Invention [0003]The present invention relates to a digital distribution management system and a contents distribution management method using the same. [0004]2. Description of the Related Art [0005]As digitalization of contents such as movies, books, music and games has become easier and a network infrastructure for contents distribution has been sufficiently built, these contents have been increasingly used for commercial purpose. Accordingly, a demand for a digital rights management system (DRM) has increased in order to safely manage digital rights for related contents. Accordingly, various license distribution methods have been increased. [0006]Conventionally, contents and licenses were distributed by a large distributor with predetermined software related to many servers for easy access of users such as Apple, Microsoft, and mobile communication companies in charge of contents distribution according to a centralized method. The centralized large distributors provide an exclusive contents format and software for contents application of a corresponding format such as iTunes and Windows Media player. Also, the centralized large distributors participate in all procedures, which are required when the user uses the contents, including packaging, distributing, billing and license issuing of the contents. Accordingly, contents-owners are only allowed to limitedly participate in comparison with the contents distributor, and it causes a problem that the contents-owners should depend on only information provided by the distributor in order to grasp a present state that their own contents are used. Although contents have great worth, the original contents are required to be exposed to a distributor. [0007]It is preferred that the contents-owners directly manage and distribute a license required for using the contents in order to clarify the right of loyalty claim. However, it is difficult that the owners of a small quantity of contents perform diverse business processes related to the contents distribution. It is also difficult to provide a device and software in which many users can use the contents while easily accessing to a license issuance device and receiving the license. [0008]Accordingly, there is a demand for open and decentralized DRM environment, in which owners and distributors of diverse scales can participate through a common framework to use the contents and easily accept requirements change due to business model change, and which is applicable in a network such as peer-to-peer. SUMMARY OF THE INVENTION [0009]The present invention has been made to solve the foregoing problems of the prior art and therefore an aspect of the present invention is to provide a digital management system and a contents distribution management method for allowing a content owner to have rights for managing license distribution so as to clearly insist the own rights, for assigning the right for releasing license to a contents provider in order to smoothly interact with contents-users and various business models while preventing the rights of the contents-owner from being infringed, and for preventing unpaid contents from being unlawfully used while allowing user's terminals to freely use paid contents (fair use). [0010]According to an aspect of the invention, the invention provides a digital rights management system. The digital rights management system includes a contents-user including a terminal capable of using corresponding contents; a broker for receiving a contents use fee from the contents-user, transmitting a contract document for contents use to the contents-user, paying a loyalty to a contents-owner, paying a distribution fee to the contents distributor and making a contract for contents use; a contents-owner for transmitting use rights, i.e., Service Release (SR), information on corresponding contents of a proper contents-user making a contents use contract to the contents distributor and receiving a corresponding loyalty through a broker; and a contents distributor for receiving SR information from the contents-owner, transmitting the contents and a license on the contents information so that the proper contents-user can use the corresponding contents, and receiving a corresponding distribution fee through the broker. [0011]According to another aspect of the invention for realizing the object, there is provided a contents distribution method. The method includes the steps of: paying a contents use fee to a broker by a contents-user and making a contract for contents use; transmitting SR information on corresponding contents of a proper contents-user making a contract from a contents-owner to a contents distributor; transmitting license information including the SR from the contents distributor to the contents-user; and using the contents based on encoded contents, license information and a contract document by the contents-user. BRIEF DESCRIPTION OF THE DRAWINGS [0012]The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: [0013]FIG. 1 is block diagram illustrating a digital distribution management system according to an exemplary embodiment of the present invention; [0014]FIG. 2 is a flowchart illustrating the step of paying a contents use fee to a broker by a contents-user and making a contract for contents use that the contents-user pays the contents use fee to a broker and makes a contract for contents use in a contents distribution management method according to an exemplary embodiment of the present invention; [0015]FIG. 3 is a block diagram illustrating a contract document for contents use which is used to the contents distribution method according to an exemplary embodiment of the present invention; [0016]FIG. 4 is a flowchart illustrating the step of transmitting the Service Release (SR) information of the contents-user to a contents distributor to manage the contents distribution according to an exemplary embodiment of the present invention; [0017]FIG. 5 is a block diagram illustrating a terminal corresponding to the user in a digital distribution management system according to an exemplary embodiment of the present invention; [0018]FIG. 6 is a flowchart illustrating the steps that the contents-user receives a license from the contents distributor and uses encoded contents to distribute the contents based on the digital distribution management system according to an exemplary embodiment of the present invention; and [0019]FIG. 7 is a block diagram illustrating the license used in the contents distribution method using the digital distribution management system according to an exemplary embodiment of the present invention. 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